Quote:
Originally Posted by Chance
The most common way to improve economy on an old engine like V10 is to run it leaner, which can cause damage, and I wouldn't risk it on mine to save a couple of dollars. I have 176,000 on V10 and would bet I wouldn't have saved enough on gas to pay for the "tune".
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Our old two-stroke snowmobiles always ran better when you leaned them out.
But they ran best, right before they blew up!
Technology has come a long way, and I'd bet that their tuning parameters are safe.